Washing-machine cylinder



W. BARTHOLOMEW. WASHING MACHINE CYLINDER.

APPLICAflON FILED OCT-23.1915.

Patented July 13, 1920.

UNITED STATES PATENT OFFICE.

WILLIAM BARTI-IOLOMEW, OF CHICAGO, ILLINOIS, ASSIGNOR TO TROY LAUNDRYMACHINERY COMPANY, LIMITED, OF CHICAGO, ILLINOIS, A CORPORATION OF NEWYORK.

WASHING-MACHINE CYLINDER.

Specification of Letters Patent. Patented J ly 13, 1920;

Application filed October 23, 1915. Serial No. 57,461.

To all whom it may concern:

Be it known that I, WVILLIAM BARTHOLO- new, a citizen of the UnitedStates, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements inWashing-Vlachine Cylinders, of which the following is a specification.

My invention relates in general to cylinder washing machines, and moreparticularly to an improved cylinder for washing machines.

' In the use of washing machines having a rotary cylinder comprisingwooden perforated staves, it frequently becomes necessary to renew someof the staves which have become worn through usage. Heretofore it hasbeen customary to retain the ends of the staves around the peripheriesof the end walls of the cylinder by means of endless bands or hoopswhich must be adjusted to exert suflicient pressure upon thesurroundingends of the staves to retain them tightly secured in place.The use of the endless hoops renders it necessary to entirely remove thesame and the surrounding staves whenever it is desired to repair thecylinder by replacing worn staves with new ones.

A primary object of my invention is to provide a cylinder for washingmachines, the parts of which will be so constructed as to securelyretain them in assembled condition, but will permit the convenientreplacement of worn parts without disturbing the normal relativepositions of the heads or getting the trunnions out of alinement.

A further object of my invention is to provide a cylinder for washingmachines in which the staves are secured by overlying straps arrangedcircumferentially around the ends of the cylinder, with each strapcovering but a small group of staves, so that no stave is dependentsolely upon its own bolts to prevent displacement, but is secured,through the medium of the strap, by the several bolts which holdadjacent staves; and notwithstanding this method of securing the staves,a worn stave may be replaced without releasing more than a minimumnumber of staves, and a suiiicient number will always be leftundisturbed in supporting relation to the heads to retain the accuratepositions thereof and prevent the trunnions from getting out ofalinement.

A still further object of my invention is to provide a cylinder forwashing machines which will be simple in construction, comparativelyinexpensive in manufacture, and durable in use.

My invention will be more fully disclosed hereinafter with reference to,the accompanylng drawing, in which the same is illustrated as embodiedin a convenient and practical form, and in which,

l l gure 1 is a perspective view;

' Big. 2 is an end elevation of a portion'of the cylinder; i

Fig. 3 a perspective view of one of the retaining plates;

Fig. 4: a perspective view of one of the tie-bars;

Fig. 5 a perspective view of one of the perforated staves; and

F 1g. 6 an enlarged detail perspective View,

Similar reference characters are used to designate similar parts in theseveral figures of the drawing.

Reference letter A designates the frame at one end of the cylinder fromwhich concentrically projects a trunnion B for rotatably supporting thecylinder. The frame A comprises radial arms C, at the outer ends ofwhich is supported a flange D. The spokes and flange of which the frameA is composed are preferably formed in an in tegral casting, to theinner surface of which is secured a plate A which, together with thesaid frame, forms the end wall of the cylinder. It will be understoodthat a frame such as above described is located at each end of thecylinder.

Tie-bars E are located around the end wall of ends of such bars beingpreferably seated in recesses (Z in the flange D in radial alinementwith the radial arms C. Located intermediate the adjacent tie-bars E areperforated staves F, the ends of which overlie the portions of theflange D intermediate the arms C. Overlyingthe outer ends of the stavesand tie-bars, and alining with the flange D of each end wall of thecylinder, are straps Gr circumferentially arranged around the ends ofthe cylinder. Bolts g extend through the straps G and underlyingportion. of the flange D, and also through the interposed ends of thestaves F and tie-bars E. The bolts therefore serve to re movably securethe sections of the hoops Gr to the flange and to also tightly securethe in spaced relation the cylinder, the,

case it loses its bolt.

frames of the cylinder.

ends of the staves and tiebars to the end receives a plurality of bolts,each stave is rendered safe by the strap that overlaps it even though itshould lose its own bolt or nut; yet the number of bolts to be removedin releasing any one stave is relatively small, and the number of stavesreleased in getting outa worn stave will not disturb the two heads orget the trunnions out of alinement. i

I In order to increase the security of the connection between the endsof thetie-bars' and staves, and the flanges of the end frames of thecylinder, outwardly projecting ribs d may be provided around the inneredges of the flanges which extend. into grooves e and 7 formed in theoverlying end portions of the tie-bars E and staves F, respectively, andthese coeperate with the hold-down straps-G to prevent a stave gettingfree in In order to permit access to the interior of the cylinder a doorH is provided, which is composed of perforated staves secured to: getherby means of hinges K, the ends of the hinges preferably extending beyondthe swingingedge of the door so as to overlie the adjacenttie-bar E andserve as stops to limit the closing movement of the door. The portion ofthe flange on each of the end walls, which alines with the spaceoccupie'd by the door, is projected outwardly,

' the staves and tie-bars. p the surrounding hoops which aline with theas shown at D so as to lie flush with the outer surface of thecylinder,formed by The sections of sides of the: door are secured to theunderlying outwardly projecting portions D of the flanges of the endwalls, such sections of the hoops serving as keepersto overlie the boltsof. the fastening devices L of the doors. 1

When any i of the staves become worn they be readily replaced by newones After the new staves have been placed in position the sections ofth hoops are placed upon their ends and the bolts 9 again inserted inposition so as to extend through.

the sections thereof, the interposed ends of the stavesandtheun'derlying portions of Since each strap the flanges D. By formingthe hoop in secvent the heads 'of-the bolts from working into the woodof which the staves are formed, an objection which occurs in the use ofwooden'cylinders for washing machines asheretofore constructed.

From the foregoing description it will be observed that l have inventedan improved cylinder for washing machines, the parts of which are soconstructed and assembled as to permit of the convenient replacement ofany of the stave's which may become worn in usage; it will be furtherobserved that the parts of my improved cylinder may be at all timesretained firmly secured together by merely adjusting the fasteningdevices which secure the separate sections of the hoops, and theunderlying series of staves, to' the end walls of the cylinder.-

i Vha't I claim is 1 1. In a cylinder for washing machines, thecombination with end walls, of staves overlying at their ends theperipheries of said end walls, hoops-formed in sections surro'und ingthe ends of the staves, the correspond ing sections of the hoopsoverlying the opposite ends of the same staves, and

means for separately detachably securing the sections of the hoops tothe end walls.

2. A trunnioned' cylinder for washing machines, comprising end wallscarrying the trunnions upon which the cylinder revolves,

-tiebars and staves overlying, at their ends, the peripheries of saidend walls andconnecting and tying said end walls together, strapsarranged circumferentlally around the'en'ds of the cylinder, each strapcover ing but" a small groupof staves, and bolts extending through theends of the tie-bars and s'taves and through the straps and end walls,whereby a stave is released by the removal 'o-fon'ly those bolts whichsecure the strap which overlies it, and the remaining members are leftintact to maintain integrity of the structure and alinement of itstrunnions;

In testimony whereof I have subscribed my name. p WILLIAM BARTHOLOMEW.Witnesses: v

C.- M. LEAR Y, WILLA-iii) K.- CLEMENT.

